What is Sticky Putty Made Of?
Sticky putty, also known as poster putty or wall putty, is a pliable, adhesive substance that is commonly used for hanging posters, decorations, and other lightweight items on walls, doors, and other smooth surfaces. Despite its name, sticky putty is actually not a type of putty at all, but rather a type of reusable adhesive that is made from a combination of synthetic polymers and other ingredients. In this article, we will take a closer look at the composition of sticky putty and how it is made.
The Ingredients of Sticky Putty
The exact composition of sticky putty varies depending on the brand and type of product, but most formulas contain a mixture of synthetic polymers, such as polyvinyl acetate (PVA) or rubber, and other ingredients that give the putty its adhesive properties and other desired characteristics. Some of the common ingredients found in sticky putty include:
- Synthetic polymers: These are the primary ingredients in sticky putty, and they give the putty its pliability, strength, and adhesive properties. Synthetic polymers are long chains of molecules that are derived from petrochemicals and other natural sources. They are usually combined with other ingredients to create a putty that is strong enough to hold posters and other lightweight items on walls, but that is also easy to remove without damaging the surface.
- Plasticizers: These are chemicals that are added to sticky putty to increase its flexibility and pliability. Plasticizers help to make the putty more malleable and easier to work with, and they also reduce the risk of cracking or breaking when the putty is stretched or pulled. Common plasticizers used in sticky putty include phthalates, which are derived from petrochemicals, and esters, which are derived from alcohols and acids.
- Solvents: Solvents are liquids that are added to sticky putty to help dissolve and disperse the other ingredients, and to make the putty easier to work with. Solvents are also used to adjust the consistency of the putty, and to control its viscosity and stickiness. Common solvents used in sticky putty include water, alcohols, and other low-molecular-weight organic compounds.
- Preservatives: Preservatives are chemicals that are added to sticky putty to help prevent the growth of mold, bacteria, and other microorganisms, and to extend the shelf life of the product. Preservatives are typically used in small quantities, and they are typically selected based on their effectiveness, safety, and compatibility with other ingredients in the putty.
- Coloring agents: Some brands of sticky putty are colored, and these colors are typically added to the putty using dyes or pigments. Coloring agents are added to the putty in small quantities, and they are typically selected based on their colorfastness, stability, and compatibility with other ingredients in the putty.
How Sticky Putty is Made
The process of making sticky putty involves combining the various ingredients in a specific order and using specific methods to ensure that the putty has the desired properties and characteristics. The exact manufacturing process varies depending on the brand and type of product, but most sticky putty is made using a similar set of steps,